Ngā Mōkai-a-Koko Mud Pool

Ngā Mōkai-a-Koko is a highly active, large mud pool located within the geothermal valley of Te Puia in Rotorua, New Zealand. Rotorua sits inside the Taupo Volcanic Zone, making it one of the most geothermally active regions on Earth. The pool is a major highlight for visitors touring the Te Whakarewarewa Geothermal Valley.

The name Ngā Mōkai-a-Koko translates to 'the pets of Koko' in the Māori language. It was named after a prominent Te Arawa chief, Koko, whose tame birds were said to have perished when they fell into the violently boiling mud. The bubbling pools are said to represent the tragic loss of the chief's beloved companions.

The violent bubbling is caused by superheated steam rising from deep underground magma chambers. As the steam pushes upward, it interacts with clay and volcanic rock, decomposing the minerals into a thick, grey mud. The varying pressures and temperatures of the escaping gases create the dramatic, erupting bubbles on the surface.

Yes, it is safe to visit Ngā Mōkai-a-Koko as long as tourists remain on the designated wooden walkways provided by Te Puia. The surrounding crust of geothermal areas is dangerously thin, and the mud is boiling at extreme temperatures. Staying within the marked boundaries ensures a safe viewing experience of this dynamic thermal feature.